The prevalence of Chlamydia psittaci infections in Belgian commercial turkey poults |
| |
| Institution: | 1. Department of Virology, Kimron Veterinary Institute, 50250 Bet Dagan, Israel;2. Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany;1. DIMES, Microbiology, Policlinico S. Orsola, University of Bologna, Italy;2. Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland;3. National Reference Laboratory for Animal Chlamydioses, Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna (IZSLER), Pavia, Italy;1. Division of Global and Tropical Health, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia;2. Menzies School of Health Research, Corporate Services, Charles Darwin University, Darwin, NT, Australia;1. Institute for Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland 4059, Australia;2. Central West Local Land Services, Dubbo, NSW 2830, Australia;3. Department of Medical Microbiology, Center for Infection and Immunity, Academic Medical Center, Amsterdam, The Netherlands;4. North West Local Land Services, Narrabri & Walgett, NSW 2390, Australia;5. Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland , 4556 Australia;1. Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, 9420 Athena Circle, La Jolla, CA 92037, USA |
| |
| Abstract: | The prevalence of Chlamydia psittaci infections in Belgian commericial turkey poults was examined and a follow-up study of one Belgian turkey flock was performed. Sera were examined for the presence of anti-chlamydia antibodies by immunoblotting. Cloacal and conjunctival swab smears and lung impression smears were examined for the presence of chlamydial antigen using the IMAGEN Chlamydia immunofluorescence test. Anti-chlamydia antibodies were found in 90 of 100 sera collected at slaughter from turkeys raised during the summer of 1992. The following winter, 73 of 100 sera reacted positively. On all twenty farms examined during 1992, turkeys were positive for anti-chlamydial antibodies. During 1993, chlamydial antigen was detected in swabs from 20 of 40 slaughterhouse turkeys tested. Antigen was found more often in the cloaca than in the conjunctiva. Chlamydial antigen was detected in samples from each of the 4 farms examined. The follow-up study on a turkey farm, sampling the birds at weekly intervals from one week old until 12 weeks of age, revealed that chlamydial antigen and anti-chlamydial antibodies were present during the whole period. During 1994, chlamydial antigen was detected in 45 of 60 lungs from slaughterhouse turkeys from all of 6 farms. During 1995, chlamydial antigen was detected in 41 of 54 lungs of 6 week old commercial turkey poults. The results of the present study indicate that Chlamydia psittaci infections are highly prevalent amongst Belgian commercial turkey poults with apparently little seasonal or year-to-year variation and that turkeys can contract the infection at an early age. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
